Service manual

3.0 Maintenance Guide
15
Figure 7
4. The backgauge accuracy can be corrected by adjusting the preset screw attached to the
bottom of the backgauge nut assembly (Figure 8).
Figure 8
Turn off power and disconnect the power cord. Remove the rear bottom cover. Place a
3/16” Allen wrench in the preset screw and hold in position while loosening the jam nut. Now
adjust the screw as follows:
• If rear pile is short (less than 5”), turn screw out (counterclockwise).
• If rear pile is long (more than 5”), turn screw in (clockwise).
1/4 turn = .012” backgauge adjustment
1/3 turn = .016 (1/64”)
1/2 turn = .024”
2/3 turn = .032” (1/32”)
1 turn = .048”
5. Replace bottom cover and turn on power. Note: If power was not off, reset power now or
reading may be false. Bring the backgauge to the front to reset the display and make another
test. Repeat adjustment procedure if necessary.
QuestionableAccurate
Preset
Screw